| S | Total number of pixels per image |
| d | Core zone width (tiling dimension) |
| n | Number of tiles in each image |
| Ctile | Cost of tiling |
| Cmap | Cost of Map step |
| Cshuffle | Cost of MapReduce shuffling sorting |
| Creduce | Cost of Reduce/aggregation |
| α, β, γ | Map cost coefficients |
| η | Boundary object increase coefficient |
| ω | Aggregation cost coefficient |
| T | Base number of boundary objects |
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